-
Notifications
You must be signed in to change notification settings - Fork 214
/
stream.cpp
834 lines (758 loc) · 21.7 KB
/
stream.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
#include "cube.h"
///////////////////////// file system ///////////////////////
#ifndef WIN32
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#endif
string homedir = "";
vector<char *> packagedirs;
char *makerelpath(const char *dir, const char *file, const char *prefix, const char *cmd)
{
static string tmp;
if(prefix) copystring(tmp, prefix);
else tmp[0] = '\0';
if(file[0]=='<')
{
const char *end = strrchr(file, '>');
if(end)
{
size_t len = strlen(tmp);
copystring(&tmp[len], file, min(sizeof(tmp)-len, size_t(end+2-file)));
file = end+1;
}
}
if(cmd) concatstring(tmp, cmd);
defformatstring(pname)("%s/%s", dir, file);
concatstring(tmp, pname);
return tmp;
}
char *path(char *s)
{
for(char *curpart = s;;)
{
char *endpart = strchr(curpart, '&');
if(endpart) *endpart = '\0';
if(curpart[0]=='<')
{
char *file = strrchr(curpart, '>');
if(!file) return s;
curpart = file+1;
}
for(char *t = curpart; (t = strpbrk(t, "/\\")); *t++ = PATHDIV);
for(char *prevdir = NULL, *curdir = s;;)
{
prevdir = curdir[0]==PATHDIV ? curdir+1 : curdir;
curdir = strchr(prevdir, PATHDIV);
if(!curdir) break;
if(prevdir+1==curdir && prevdir[0]=='.')
{
memmove(prevdir, curdir+1, strlen(curdir+1)+1);
curdir = prevdir;
}
else if(curdir[1]=='.' && curdir[2]=='.' && curdir[3]==PATHDIV)
{
if(prevdir+2==curdir && prevdir[0]=='.' && prevdir[1]=='.') continue;
memmove(prevdir, curdir+4, strlen(curdir+4)+1);
curdir = prevdir;
}
}
if(endpart)
{
*endpart = '&';
curpart = endpart+1;
}
else break;
}
return s;
}
char *unixpath(char *s)
{
for(char *t = s; (t = strchr(t, '\\')); *t++ = '/');
return s;
}
char *path(const char *s, bool copy)
{
static string tmp;
copystring(tmp, s);
path(tmp);
return tmp;
}
const char *parentdir(const char *directory)
{
const char *p = directory + strlen(directory);
while(p > directory && *p != '/' && *p != '\\') p--;
static string parent;
size_t len = p-directory+1;
copystring(parent, directory, len);
return parent;
}
const char *behindpath(const char *s)
{
const char *t = s;
for( ; (s = strpbrk(s, "/\\")); t = ++s);
return t;
}
bool fileexists(const char *path, const char *mode)
{
bool exists = true;
if(mode[0]=='w' || mode[0]=='a') path = parentdir(path);
#ifdef WIN32
if(GetFileAttributes(path) == INVALID_FILE_ATTRIBUTES) exists = false;
#else
if(access(path, R_OK | (mode[0]=='w' || mode[0]=='a' ? W_OK : 0)) == -1) exists = false;
#endif
return exists;
}
bool createdir(const char *path)
{
size_t len = strlen(path);
if(path[len-1]==PATHDIV)
{
static string strip;
path = copystring(strip, path, len);
}
#ifdef WIN32
return CreateDirectory(path, NULL)!=0;
#else
return mkdir(path, 0777)==0;
#endif
}
size_t fixpackagedir(char *dir)
{
path(dir);
size_t len = strlen(dir);
if(len > 0 && dir[len-1] != PATHDIV)
{
dir[len] = PATHDIV;
dir[len+1] = '\0';
}
return len;
}
#ifdef WIN32
char *getregszvalue(HKEY root, const char *keystr, const char *query)
{
HKEY key;
if(RegOpenKeyEx(HKEY_CURRENT_USER, keystr, 0, KEY_READ, &key)==ERROR_SUCCESS)
{
DWORD type = 0, len = 0;
if(RegQueryValueEx(key, query, 0, &type, 0, &len)==ERROR_SUCCESS && type==REG_SZ)
{
char *val = new char[len];
long result = RegQueryValueEx(key, query, 0, &type, (uchar *)val, &len);
if(result==ERROR_SUCCESS)
{
RegCloseKey(key);
val[len-1] = '\0';
return val;
}
delete[] val;
}
RegCloseKey(key);
}
return NULL;
}
#endif
void sethomedir(const char *dir)
{
string tmpdir;
copystring(tmpdir, dir);
#ifdef WIN32
const char substitute[] = "?MYDOCUMENTS?";
if(!strncmp(dir, substitute, strlen(substitute)))
{
const char *regpath = "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders";
char *mydocuments = getregszvalue(HKEY_CURRENT_USER, regpath, "Personal");
if(mydocuments)
{
formatstring(tmpdir)("%s%s", mydocuments, dir+strlen(substitute));
delete[] mydocuments;
}
else
{
printf("failed to retrieve 'Personal' path from '%s'\n", regpath);
}
}
#endif
if(fixpackagedir(tmpdir) > 0)
{
#ifndef STANDALONE
clientlogf("Using home directory: %s", tmpdir);
#endif
copystring(homedir, tmpdir);
createdir(homedir);
}
}
void addpackagedir(const char *dir)
{
string pdir;
copystring(pdir, dir);
if(fixpackagedir(pdir) > 0)
{
#ifndef STANDALONE
clientlogf("Adding package directory: %s", pdir);
#endif
packagedirs.add(newstring(pdir));
}
}
const char *findfile(const char *filename, const char *mode)
{
static string s;
formatstring(s)("%s%s", homedir, filename); // homedir may be ""
if(homedir[0] && fileexists(s, mode)) return s;
if(mode[0]=='w' || mode[0]=='a')
{ // create missing directories, if necessary
string dirs;
copystring(dirs, s);
char *dir = strchr(dirs[0]==PATHDIV ? dirs+1 : dirs, PATHDIV);
while(dir)
{
*dir = '\0';
if(!fileexists(dirs, "r") && !createdir(dirs)) return s;
*dir = PATHDIV;
dir = strchr(dir+1, PATHDIV);
}
return s;
}
loopv(packagedirs)
{
formatstring(s)("%s%s", packagedirs[i], filename);
if(fileexists(s, mode)) return s;
}
return filename;
}
bool listdir(const char *dir, const char *ext, vector<char *> &files)
{
int extsize = ext ? (int)strlen(ext)+1 : 0;
#if defined(WIN32)
defformatstring(pathname)("%s\\*.%s", dir, ext ? ext : "*");
WIN32_FIND_DATA FindFileData;
HANDLE Find = FindFirstFile(path(pathname), &FindFileData);
if(Find != INVALID_HANDLE_VALUE)
{
do {
files.add(newstring(FindFileData.cFileName, (int)strlen(FindFileData.cFileName) - extsize));
} while(FindNextFile(Find, &FindFileData));
FindClose(Find);
return true;
}
#else
string pathname;
copystring(pathname, dir);
DIR *d = opendir(path(pathname));
if(d)
{
struct dirent *de;
while((de = readdir(d)) != NULL)
{
if(!ext) files.add(newstring(de->d_name));
else
{
int namelength = (int)strlen(de->d_name) - extsize;
if(namelength > 0 && de->d_name[namelength] == '.' && strncmp(de->d_name+namelength+1, ext, extsize-1)==0)
files.add(newstring(de->d_name, namelength));
}
}
closedir(d);
return true;
}
#endif
else return false;
}
int listfiles(const char *dir, const char *ext, vector<char *> &files)
{
int dirs = 0;
if(listdir(dir, ext, files)) dirs++;
string s;
if(homedir[0])
{
formatstring(s)("%s%s", homedir, dir);
if(listdir(s, ext, files)) dirs++;
}
loopv(packagedirs)
{
formatstring(s)("%s%s", packagedirs[i], dir);
if(listdir(s, ext, files)) dirs++;
}
#ifndef STANDALONE
dirs += listzipfiles(dir, ext, files);
#endif
return dirs;
}
#ifndef STANDALONE
void listfilesrecursive(const char *dir, vector<char *> &files, int level)
{
if(level > 8) return; // 8 levels is insane enough...
vector<char *> thisdir;
listfiles(dir, NULL, thisdir);
loopv(thisdir)
{
if(thisdir[i][0] != '.') // ignore "." and ".." (and also other directories starting with '.', like it is unix-convention - and doesn't hurt on windows)
{
defformatstring(name)("%s/%s", dir, thisdir[i]);
files.add(newstring(name));
listfilesrecursive(name, files, level + 1);
}
delstring(thisdir[i]);
}
}
#endif
bool delfile(const char *path)
{
return !remove(path);
}
void backup(char *name, char *backupname)
{
string backupfile;
copystring(backupfile, findfile(backupname, "wb"));
remove(backupfile);
rename(findfile(name, "wb"), backupfile);
}
#ifndef STANDALONE
static int rwopsseek(SDL_RWops *rw, int offset, int whence)
{
stream *f = (stream *)rw->hidden.unknown.data1;
if((!offset && whence==SEEK_CUR) || f->seek(offset, whence)) return f->tell();
return -1;
}
static int rwopsread(SDL_RWops *rw, void *buf, int size, int nmemb)
{
stream *f = (stream *)rw->hidden.unknown.data1;
return f->read(buf, size*nmemb)/size;
}
static int rwopswrite(SDL_RWops *rw, const void *buf, int size, int nmemb)
{
stream *f = (stream *)rw->hidden.unknown.data1;
return f->write(buf, size*nmemb)/size;
}
static int rwopsclose(SDL_RWops *rw)
{
return 0;
}
SDL_RWops *stream::rwops()
{
SDL_RWops *rw = SDL_AllocRW();
if(!rw) return NULL;
rw->hidden.unknown.data1 = this;
rw->seek = rwopsseek;
rw->read = rwopsread;
rw->write = rwopswrite;
rw->close = rwopsclose;
return rw;
}
#endif
long stream::size()
{
long pos = tell(), endpos;
if(pos < 0 || !seek(0, SEEK_END)) return -1;
endpos = tell();
return pos == endpos || seek(pos, SEEK_SET) ? endpos : -1;
}
bool stream::getline(char *str, int len)
{
loopi(len-1)
{
if(read(&str[i], 1) != 1) { str[i] = '\0'; return i > 0; }
else if(str[i] == '\n') { str[i+1] = '\0'; return true; }
}
if(len > 0) str[len-1] = '\0';
return true;
}
#ifndef WIN32
#include <sys/statvfs.h>
const int64_t MINFSSIZE = 50000000; // 50MB
#endif
struct filestream : stream
{
FILE *file;
filestream() : file(NULL) {}
~filestream() { close(); }
bool open(const char *name, const char *mode)
{
if(file) return false;
file = fopen(name, mode);
#ifndef WIN32
struct statvfs buf;
if(file && strchr(mode,'w'))
{
int fail = fstatvfs(fileno(file), &buf);
if (fail || (int64_t)buf.f_frsize * (int64_t)buf.f_bavail < MINFSSIZE)
{
close();
return false;
}
}
#endif
return file!=NULL;
}
bool opentemp(const char *name, const char *mode)
{
if(file) return false;
#ifdef WIN32
file = fopen(name, mode);
#else
file = tmpfile();
#endif
return file!=NULL;
}
void close()
{
if(file) { fclose(file); file = NULL; }
}
bool end() { return feof(file)!=0; }
long tell() { return ftell(file); }
bool seek(long offset, int whence) { return fseek(file, offset, whence) >= 0; }
void fflush() { if(file) ::fflush(file); }
int read(void *buf, int len) { return (int)fread(buf, 1, len, file); }
int write(const void *buf, int len) { return (int)fwrite(buf, 1, len, file); }
int getchar() { return fgetc(file); }
bool putchar(int c) { return fputc(c, file)!=EOF; }
bool getline(char *str, int len) { return fgets(str, len, file)!=NULL; }
bool putstring(const char *str) { return fputs(str, file)!=EOF; }
int printf(const char *fmt, ...)
{
va_list v;
va_start(v, fmt);
int result = vfprintf(file, fmt, v);
va_end(v);
return result;
}
};
#ifndef STANDALONE
//VAR(dbggz, 0, 0, 1);
const int dbggz = 0;
#endif
struct gzstream : stream
{
enum
{
MAGIC1 = 0x1F,
MAGIC2 = 0x8B,
BUFSIZE = 16384,
OS_UNIX = 0x03
};
enum
{
F_ASCII = 0x01,
F_CRC = 0x02,
F_EXTRA = 0x04,
F_NAME = 0x08,
F_COMMENT = 0x10,
F_RESERVED = 0xE0
};
stream *file;
z_stream zfile;
uchar *buf;
bool reading, writing, autoclose;
uint crc;
int headersize;
gzstream() : file(NULL), buf(NULL), reading(false), writing(false), autoclose(false), crc(0), headersize(0)
{
zfile.zalloc = NULL;
zfile.zfree = NULL;
zfile.opaque = NULL;
zfile.next_in = zfile.next_out = NULL;
zfile.avail_in = zfile.avail_out = 0;
}
~gzstream()
{
close();
}
void writeheader()
{
uchar header[] = { MAGIC1, MAGIC2, Z_DEFLATED, 0, 0, 0, 0, 0, 0, OS_UNIX };
file->write(header, sizeof(header));
}
void readbuf(int size = BUFSIZE)
{
if(!zfile.avail_in) zfile.next_in = (Bytef *)buf;
size = min(size, int(&buf[BUFSIZE] - &zfile.next_in[zfile.avail_in]));
int n = file->read(zfile.next_in + zfile.avail_in, size);
if(n > 0) zfile.avail_in += n;
}
int readbyte(int size = BUFSIZE)
{
if(!zfile.avail_in) readbuf(size);
if(!zfile.avail_in) return 0;
zfile.avail_in--;
return *(uchar *)zfile.next_in++;
}
void skipbytes(int n)
{
while(n > 0 && zfile.avail_in > 0)
{
int skipped = min(n, (int)zfile.avail_in);
zfile.avail_in -= skipped;
zfile.next_in += skipped;
n -= skipped;
}
if(n <= 0) return;
file->seek(n, SEEK_CUR);
}
bool checkheader()
{
readbuf(10);
if(readbyte() != MAGIC1 || readbyte() != MAGIC2 || readbyte() != Z_DEFLATED) return false;
int flags = readbyte();
if(flags & F_RESERVED) return false;
skipbytes(6);
if(flags & F_EXTRA)
{
int len = readbyte(512);
len |= readbyte(512)<<8;
skipbytes(len);
}
if(flags & F_NAME) while(readbyte(512));
if(flags & F_COMMENT) while(readbyte(512));
if(flags & F_CRC) skipbytes(2);
headersize = file->tell() - zfile.avail_in;
return zfile.avail_in > 0 || !file->end();
}
bool open(stream *f, const char *mode, bool needclose, int level)
{
if(file) return false;
for(; *mode; mode++)
{
if(*mode=='r') { reading = true; break; }
else if(*mode=='w') { writing = true; break; }
}
if(reading)
{
if(inflateInit2(&zfile, -MAX_WBITS) != Z_OK) reading = false;
}
else if(writing && deflateInit2(&zfile, level, Z_DEFLATED, -MAX_WBITS, min(MAX_MEM_LEVEL, 8), Z_DEFAULT_STRATEGY) != Z_OK) writing = false;
if(!reading && !writing) return false;
autoclose = needclose;
file = f;
crc = crc32(0, NULL, 0);
buf = new uchar[BUFSIZE];
if(reading)
{
if(!checkheader()) { stopreading(); return false; }
}
else if(writing) writeheader();
return true;
}
uint getcrc() { return crc; }
void finishreading()
{
if(!reading) return;
#ifndef STANDALONE
if(dbggz)
{
uint checkcrc = 0, checksize = 0;
loopi(4) checkcrc |= uint(readbyte()) << (i*8);
loopi(4) checksize |= uint(readbyte()) << (i*8);
if(checkcrc != crc)
conoutf("gzip crc check failed: read %X, calculated %X", checkcrc, crc);
if(checksize != zfile.total_out)
conoutf("gzip size check failed: read %d, calculated %d", checksize, zfile.total_out);
}
#endif
}
void stopreading()
{
if(!reading) return;
inflateEnd(&zfile);
reading = false;
}
void finishwriting()
{
if(!writing) return;
for(;;)
{
int err = zfile.avail_out > 0 ? deflate(&zfile, Z_FINISH) : Z_OK;
if(err != Z_OK && err != Z_STREAM_END) break;
flush();
if(err == Z_STREAM_END) break;
}
uchar trailer[8] =
{
uchar(crc&0xFF), uchar((crc>>8)&0xFF), uchar((crc>>16)&0xFF), uchar((crc>>24)&0xFF),
uchar(zfile.total_in&0xFF), uchar((zfile.total_in>>8)&0xFF), uchar((zfile.total_in>>16)&0xFF), uchar((zfile.total_in>>24)&0xFF)
};
file->write(trailer, sizeof(trailer));
}
void stopwriting()
{
if(!writing) return;
deflateEnd(&zfile);
writing = false;
}
void close()
{
if(reading) finishreading();
stopreading();
if(writing) finishwriting();
stopwriting();
DELETEA(buf);
if(autoclose) DELETEP(file);
}
bool end() { return !reading && !writing; }
long tell() { return reading ? zfile.total_out : (writing ? zfile.total_in : -1); }
bool seek(long offset, int whence)
{
if(writing || !reading) return false;
if(whence == SEEK_END)
{
uchar skip[512];
while(read(skip, sizeof(skip)) == sizeof(skip));
return !offset;
}
else if(whence == SEEK_CUR) offset += zfile.total_out;
if(offset >= (int)zfile.total_out) offset -= zfile.total_out;
else if(offset < 0 || !file->seek(headersize, SEEK_SET)) return false;
else
{
if(zfile.next_in && zfile.total_in <= uint(zfile.next_in - buf))
{
zfile.avail_in += zfile.total_in;
zfile.next_in -= zfile.total_in;
}
else
{
zfile.avail_in = 0;
zfile.next_in = NULL;
}
inflateReset(&zfile);
crc = crc32(0, NULL, 0);
}
uchar skip[512];
while(offset > 0)
{
int skipped = min(offset, (long)sizeof(skip));
if(read(skip, skipped) != skipped) { stopreading(); return false; }
offset -= skipped;
}
return true;
}
int read(void *buf, int len)
{
if(!reading || !buf || !len) return 0;
zfile.next_out = (Bytef *)buf;
zfile.avail_out = len;
while(zfile.avail_out > 0)
{
if(!zfile.avail_in)
{
readbuf(BUFSIZE);
if(!zfile.avail_in) { stopreading(); break; }
}
int err = inflate(&zfile, Z_NO_FLUSH);
if(err == Z_STREAM_END) { crc = crc32(crc, (Bytef *)buf, len - zfile.avail_out); finishreading(); stopreading(); return len - zfile.avail_out; }
else if(err != Z_OK) { stopreading(); break; }
}
crc = crc32(crc, (Bytef *)buf, len - zfile.avail_out);
return len - zfile.avail_out;
}
bool flush()
{
if(zfile.next_out && zfile.avail_out < BUFSIZE)
{
if(file->write(buf, BUFSIZE - zfile.avail_out) != int(BUFSIZE - zfile.avail_out))
return false;
}
zfile.next_out = buf;
zfile.avail_out = BUFSIZE;
return true;
}
int write(const void *buf, int len)
{
if(!writing || !buf || !len) return 0;
zfile.next_in = (Bytef *)buf;
zfile.avail_in = len;
while(zfile.avail_in > 0)
{
if(!zfile.avail_out && !flush()) { stopwriting(); break; }
int err = deflate(&zfile, Z_NO_FLUSH);
if(err != Z_OK) { stopwriting(); break; }
}
crc = crc32(crc, (Bytef *)buf, len - zfile.avail_in);
return len - zfile.avail_in;
}
};
stream *openrawfile(const char *filename, const char *mode)
{
const char *found = findfile(filename, mode);
#ifndef STANDALONE
if(mode && (mode[0]=='w' || mode[0]=='a')) conoutf("writing to file: %s", found);
#endif
if(!found) return NULL;
filestream *file = new filestream;
if(!file->open(found, mode))
{
#ifndef STANDALONE
// conoutf("file failure! %s",filename);
#endif
delete file; return NULL;
}
return file;
}
stream *openfile(const char *filename, const char *mode)
{
#ifndef STANDALONE
stream *s = openzipfile(filename, mode);
if(s) return s;
#endif
return openrawfile(filename, mode);
}
int getfilesize(const char *filename)
{
stream *f = openfile(filename, "rb");
if(!f) return -1;
int len = f->size();
delete f;
return len;
}
stream *opentempfile(const char *name, const char *mode)
{
const char *found = findfile(name, mode);
filestream *file = new filestream;
if(!file->opentemp(found ? found : name, mode)) { delete file; return NULL; }
return file;
}
stream *opengzfile(const char *filename, const char *mode, stream *file, int level)
{
stream *source = file ? file : openfile(filename, mode);
if(!source) return NULL;
gzstream *gz = new gzstream;
if(!gz->open(source, mode, !file, level)) { if(!file) delete source; return NULL; }
return gz;
}
char *loadfile(const char *fn, int *size, const char *mode)
{
stream *f = openfile(fn, mode ? mode : "rb");
if(!f) return NULL;
int len = f->size();
if(len<=0) { delete f; return NULL; }
char *buf = new char[len+1];
if(!buf) { delete f; return NULL; }
buf[len] = 0;
int rlen = f->read(buf, len);
delete f;
if(len!=rlen && (!mode || strchr(mode, 'b')))
{
delete[] buf;
return NULL;
}
if(size!=NULL) *size = len;
return buf;
}
#ifndef STANDALONE
void filerotate(const char *basename, const char *ext, int keepold, const char *oldformat) // rotate old logfiles
{
char fname1[MAXSTRLEN * 2], fname2[MAXSTRLEN] = "";
copystring(fname1, findfile(basename, "w"));
int mid = strlen(fname1);
if(!oldformat) oldformat = "-old-%d";
for(; keepold >= 0; keepold--)
{
formatstring(fname1 + mid)(keepold ? oldformat : "", keepold);
concatformatstring(fname1 + mid, ".%s", ext);
if(fname2[0]) rename(fname1, fname2);
else remove(fname1);
copystring(fname2, fname1);
}
}
#endif